Is the Wii Fit worth it?

I recently  started my diet on Jan 5th as part of one of my New Years Resolutions. In doing so I bought the Wii so that I can run around and play the sport games it has to offer as a way to exercise. Everyday I play Wii sports for 30 min to an hour. Let me tell u if u do the right moving around it does make u sweat. SO I was thinking of buying the Wii Fit. It offers different type of exercise routines and strength training. SO I wanted to see if anyone out their has the Wii fit and if they enjoy it and benifit from it.  Let me know…bc im not the gym type person =/